Propelling device for ice-vehicles.



PATENTED J U-NE 2, 1903 I. N. HENNESS. PROPELLING. DEVICE FOR 103 VEHI'GLES.

APPLICATION FILED JULY 24. 1902.

10 MODEL.

WITNESSES I '/NVENTO/? [N/Yemaw.

ATTORNEY UNITED STATES Patented June 2, 1903.

ISAAC N. HENNES-S, OF IL WACO, WASHINGTON.

PROPEILLING DEVICE Fo ICE-VEHICLES.

SPECIFICATION forming part of Letters Patent No. 729,935, datedJune 2, 1903. I Application filed July 24,1902 Serial No.116,833. (No model.)

To all whom it may concern:

Be it known that I, ISAAG N. HENNESS, a citizen of the United States, residing at Ilwaco, in the county of Pacific and State of Washington, have invented certain new and useful Improvements in Propelling Devices for Ice- Vehicles, of which the following'is a specification, reference being had therein to the accompanying drawings.

This invention relates tovehicle-propellers, and specifically to an improvement in the icevehicle shown and described in my application, Serial No. 90,315, filed March 1, 1902; and the object of the invention is to render the device more efficient in operation.

The invention consists in a plurality of two-partlongitudinal push-bars providedwith' I connection with an engine; also, in the novel means for providing for vertical adjustment of the forward ends of said push-bars and in the novel means of conveying the power from the driving-shaft to the push-bars, as will be hereinafter set forth.

In the accompanying drawings-,Figure 1 is a plan view of the rear end ofa vehicle with -my improved, propelling apparatus applied body and preferably in proximity to the back end thereof is a transversely-arranged multiple-crank shaft d, journaled in suitable bearings e. A sprocket-wheel f is fixedly mounted upon said shaft, by which the shaft is driven from a suitable motor (not shown) through the medium of a link belt f.

Push-bars comprised of parts 9 and g, re-

spectively, are connected at the forward ends by means of sleeves h, formed thereon, to a horizontal shaft t, terminating at its opposite ends in blocks t", mounted and movable vertically in adjustment-frames j by means of take-up or set screws j. The rear ends of the various push-bars are secured by pivots k to lugs k of shoes 1, having downwardlyprojecting calks Z, whereby penetrating engagement may-be had with the track-surface.

m indicates rods connecting the crank-pins of shaft d with the contiguous ends ofv the push-bars, whereby the several push-bars are alternately deflected and relatively flattened out, andconsequently thrust backwardly and redraw the propelling ends thereof. The office of the vertical adjustment at the forward ends of the push-bars is to regulatethe length of stroke of said bars and regulate the speed and power to suit condition of track or weight of sled and its cargo.

The relative sizes of the various cranks, bars, and connecting-rods should be of suitable proportions, as determined in practice; butgood results are obtainable by constructing and arranging the same in the proportions shown in the drawings.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, isv 1. The herein-described propelling means for ice-vehicles comprising, in combination, the crank-shaft d, push-bars g g verticallyadjustable shaft 1', frame j, set-screws], shoes Z and connecting-rods m.

2. The combination with the vehicle-body, the crank-shaft journaled therein, and means for actuating the said crank-shaft, of rods connected to the cranks of the said shaft, a shaft adj ustably mounted in front of the said crank-shaft, means for adjusting the said last-named shaft, and push-bars consisting of two members each having one of their ends pivotally connected to the said rods, the foremost of said members having their other ends sleeved on the said last-named shaft, and shoes secured to the free ends of the other members of the said push-bars, substantially as and for the purpose specified.

In testimony whereof I affix my signature in presence of two witnesses.

ISAAC N. HENNESS. Witnesses:

BESSIE L. BRUMBACH, J. J BRUMBAOH. 

